Encyclopedia Entry: 74HCT40105DB,118

Product Overview

Category

The 74HCT40105DB,118 belongs to the category of integrated circuits (ICs). Specifically, it falls under the category of shift registers.

Use

This product is primarily used for serial-in, parallel-out (SIPO) data shifting applications. It allows for the conversion of serial data into parallel format, making it suitable for various digital systems and communication protocols.

Characteristics

• High-speed operation: The 74HCT40105DB,118 offers fast data shifting capabilities, enabling efficient data transfer.
• Low power consumption: This IC is designed to consume minimal power, making it energy-efficient.
• Wide operating voltage range: It can operate within a wide voltage range, typically between 2V and 6V.
• Compatibility: The 74HCT40105DB,118 is compatible with both TTL and CMOS logic levels, ensuring versatility in different system designs.

Package and Quantity

The 74HCT40105DB,118 is available in a standard SOIC (Small Outline Integrated Circuit) package. It consists of 16 pins arranged in a compact form factor. These packages are commonly sold in reels or tubes, containing multiple units per package.

Specifications

• Supply Voltage Range: 2V to 6V
• Number of Shift Register Stages: 8
• Maximum Clock Frequency: 25 MHz
• Input/Output Logic Compatibility: TTL and CMOS
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The detailed pin configuration of the 74HCT40105DB,118 is as follows:

Pin 1: Serial Data Input (DS) Pin 2: Clock Input (CP) Pin 3: Master Reset Input (MR) Pin 4: Parallel Data Output Q0 Pin 5: Parallel Data Output Q1 Pin 6: Parallel Data Output Q2 Pin 7: Parallel Data Output Q3 Pin 8: Parallel Data Output Q4 Pin 9: Parallel Data Output Q5 Pin 10: Parallel Data Output Q6 Pin 11: Parallel Data Output Q7 Pin 12: Serial Data Output (QH) Pin 13: Ground (GND) Pin 14: Supply Voltage (VCC) Pin 15: Clock Enable Input (CE) Pin 16: Clock Inhibit Input (CI)

Functional Features

• Serial-to-Parallel Conversion: The 74HCT40105DB,118 can convert serial data into parallel format, allowing for efficient data processing.
• Shift Register Operation: It performs the shifting of data bits in a sequential manner based on clock signals.
• Master Reset Functionality: The IC includes a master reset input that allows for resetting the shift register to its initial state.
• Clock Enable and Inhibit: The clock enable and inhibit inputs provide control over the clock signal, enabling or disabling the shifting operation.

Advantages and Disadvantages

Advantages

• High-speed operation enables fast data transfer.
• Low power consumption makes it energy-efficient.
• Wide operating voltage range provides flexibility in various applications.
• Compatibility with TTL and CMOS logic levels ensures versatility.

Disadvantages

• Limited number of shift register stages (8) may not be suitable for applications requiring larger data storage capacity.
• Lack of built-in error detection or correction mechanisms.

Working Principles

The 74HCT40105DB,118 operates based on the principle of sequential data shifting. When a clock signal is applied, the serial data input (DS) is shifted through the internal shift register stages. The shifted data is then available at the parallel data outputs (Q0-Q7). The clock enable and inhibit inputs control the clock signal, allowing for precise control over the shifting operation. The master reset input (MR) resets the shift register to its initial state.

Application Field Plans

The 74HCT40105DB,118 finds applications in various fields, including: 1. Data communication systems: It can be used for serial-to-parallel conversion in protocols such as UART (Universal Asynchronous Receiver-Transmitter). 2. Display systems: The IC can drive parallel data inputs to LED displays or LCD panels. 3. Memory interfacing: It can be utilized for interfacing with memory devices that require parallel data inputs. 4. Industrial automation: The product can be employed in control systems that involve data processing and manipulation.

Alternative Models

For similar functionality, alternative models to the 74HCT40105DB,118 include: - SN74HC595N - CD4015BE - 74LS164

These alternatives offer comparable features and can be considered based on specific application requirements.

In conclusion, the 74HCT40105DB,118 is a versatile shift register IC that enables